Janse, Anthonie, Bleijenberg, Gijs, Knoop, Hans · Journal of psychosomatic research · 2019 · DOI
This study followed 511 ME/CFS patients for up to 10 years after they completed cognitive behavioral therapy (CBT) to see which factors predicted who would recover better long-term. Researchers found that patients who started with less severe fatigue, had symptoms for a shorter time before treatment, and felt more in control of their fatigue tended to have better outcomes years later. The study suggests that maximizing improvements during treatment and addressing pain may be important for lasting recovery.
Understanding which patients benefit most from CBT and what predicts sustained improvement helps clinicians identify candidates most likely to improve and optimize treatment strategies. The finding that sense of control and early intervention influence long-term outcomes provides actionable targets for improving CBT efficacy in ME/CFS. This research validates CBT as a tool for some patients while highlighting the need to address individual factors like pain management.
This study does not prove that CBT causes long-term improvement—it identifies associations in patients who chose to pursue CBT, so selection bias and placebo effects cannot be excluded. The findings do not demonstrate that CBT works equally well for all ME/CFS patients, and the study cannot establish whether the predictive factors are causal mechanisms or merely markers of treatment responsiveness. Results from this cohort may not generalize to ME/CFS patients outside the studied populations or those with different symptom severity profiles.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Janse, Anthonie, Bleijenberg, Gijs, & Knoop, Hans (2019). Prediction of long-term outcome after cognitive behavioral therapy for chronic fatigue syndrome.. Journal of psychosomatic research. https://doi.org/10.1016/j.jpsychores.2019.03.017
BibTeX
@article{mecfsatlas-janse-2019-prediction-long,
author = {Janse, Anthonie and Bleijenberg, Gijs and Knoop, Hans},
title = {Prediction of long-term outcome after cognitive behavioral therapy for chronic fatigue syndrome.},
journal = {Journal of psychosomatic research},
year = {2019},
doi = {10.1016/j.jpsychores.2019.03.017},
note = {PubMed: 31006534},
url = {https://www.mecfsatlas.com/evidence/janse-2019-prediction-long},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-29. https://www.mecfsatlas.com/evidence/janse-2019-prediction-long
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